import { IHealthIndicator } from '@breadstone/archipel-platform-health';
import { HealthIndicatorResult } from '@nestjs/terminus';
/**
 * Health indicator for the caching layer.
 *
 * @public
 */
export declare class CachingHealthIndicator implements IHealthIndicator {
    readonly key: string;
    /**
     * Returns the health status of the caching layer.
     *
     * @public
     * @returns The health indicator result.
     */
    check(): HealthIndicatorResult<string>;
}